ASTM A53 Table X2.2 gives dimensions of pipe. Weight Class and Schedule No. are different columns, and for sizes 1/8" through 10", weight class "STD" and Schedule 40 have the same dimensions. At 12", STD is between 30 and 40, and at 14" STD is the same as Sch 30. And so on. I haven't found a definition of Weight Class and Schedule, perhaps it's in another industry standard?
Section 3.1.6 says that ordering information for pipe should include "Size (either nominal (NPS) [DN] and weight class or schedule number, or both; or outside diameter and wall thickness, see Table X2.2 and Table X2.3)." Section 21.1.3 requires pipe to be marked with "Size (NPS and weight class, schedule number, or specified wall thickness; or specified outside diameter and specified wall thickness)." Disclaimer: I always change the term "Standard Weight" to read "Schedule 40" whenever I mark up an AIA MasterSpec boilerplate spec. I know that it can be confusing and I hate confusion! Eric J. Shelton, PE Senior Fire Protection Engineer AECOM Design Direct 540.857.3282 AECOM 10 South Jefferson Street, Suite 1600 Roanoke, Virginia 24011 T 540.857.3100 F 540.857.3180 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Chris Cahill Sent: Thursday, December 16, 2010 12:53 PM To: [email protected] Subject: Re: Std. Weight Pipe Defs are in ASTM 53 which is most likely referenced. But I agree we should always speak in schedules or wall thickness. Don't beat up the specifiers too nuch when NFPA 11 2010 uses std. weight. Chris -----Original Message----- From: "Bob Knight" <[email protected]> Sender: [email protected] Date: Thu, 16 Dec 2010 10:36:16 To: <[email protected]> Reply-To: [email protected] Subject: RE: Std. Weight Pipe Right on Thom! I have always interpreted it to mean Sch 40 & Sch 10. I can't recall ever being challenged using this as my basis for standard weight pipe. BK -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Thom Sent: Thursday, December 16, 2010 10:29 AM To: [email protected] Subject: RE: Std. Weight Pipe Just from the answers you've received I say they make my point that Standard weight is ill defined, and in the mind of the beholder. Look at all of the differences in the answers! Who's right? All of them! And none of them, or more appropriately more than all of them. Any reasonable interpretation. (Specific to military, they define what standard weight pipe is in their general material standards, so if this is gov. spec. they should list additional standards as ref.) T. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ron Greenman Sent: Thursday, December 16, 2010 9:52 AM To: [email protected] Subject: Re: Std. Weight Pipe Standard weight is typically schd 40 up to 6". Standard weight 6" + is steed 30. Anything less is lightweight (schd 5, 7, 10 & lightweight thread-able (schd 30 under 6") and anything more is heavy weight (schd 80 & 120). On Thu, Dec 16, 2010 at 8:45 AM, Brian Harris <[email protected]> wrote: > When reading a spec and it list 1-1/2" and smaller to be Standard > Weight Pipe, 2" and above to be standard weight pipe, how do most of > you interpret > "standard weight" pipe? 1-1/2" and smaller = sch.40 & 2" and above = > sch.10? What's the industry standard when it comes to standard weight? > > > > Brian Harris > > First Defense Fire Protection > > 11957 Ramah Church Road > > Huntersville, NC 28078 > > Phone: 704.948.3506 > > Fax: 704.948.3507 > > Nicet # 128476 > > > > > > > > ======= > Email scanned by PC Tools - No viruses or spyware found. > (Email Guard: 7.0.0.21, Virus/Spyware Database: 6.16520) > http://www.pctools.com/ ======= >_______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: AFSA, SFPE, ASCET, NFPA, NFSA, AFAA, ASEE, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626)_______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
